Almost nothing has ever defeated my Sykes Pickavant pullers. (Only Ford halfshaft bearings, until the retaining ring had been split and removed )
When removing or fitting rolling bearings, the force should be applied to the inner or outer track (whichever is fixed on the shaft or in the housing ), if the bearing is not to be damaged.
If the bearing is to be replaced, it does not matter so much, but if the bearing disintegrates, it can be difficult removing just the inner track from the shaft. Believe me!!!!!!!!!!
When direct access behind the bearing is not possible, the type m,of puller consisting bof two halves, clamped together behind the bearing has to be used. If making your own puller:
It needs to be strong enough not to bend under the applied load. If in doubt, make it thicker!
If the forcing thread is not central, at least two symmetrically placed ones will be needed, being equally tightened in small stages.
I have seen 1" channel bend under the load applied by a 1/2 BSF thread when trying to remove a brakedrum from the taper on a semi floating halfshaft!
Heat can help!
Howard